body{
    background: url(../img/dl.jpg) no-repeat;
    background-position: center;
    background-size: 100% 100%;
    background-size: cover;
    background-attachment: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    min-width: 800px;
    z-index: -10;
    zoom: 1;
    overflow: hidden;
}
.container {
    opacity: 0.8;
    background-color: rgb(255, 210, 47);
    width: 800px;
    height: 400px;
    min-height: 400px;
    position: fixed;
    top: 25%;
    right:25%;
}

.title-p {
    width: 100%;
    text-align: center;
    font-size: 20px;
    font-weight: 550;
}

.register-box {
    /* margin-top: 20px; */

}

.tips {
    color: red;
}